Mesa 18.2 vs. 18.3 vs. 19.0 January Benchmarks For RadeonSI/RADV

With Mesa 19.0 entering its feature freeze before the month is through, here are fresh benchmarks of the very latest RadeonSI OpenGL and RADV Vulkan performance on Polaris and Vega graphics cards compared to the current stable Mesa 18.3 series and the former 18.2 release. This testing is complementary to last week's Mesa 19.0 RADV vs. AMDVLK vs. AMDGPU-PRO Vulkan tests.